CN1324372C - Liquid crystal element, manufacture thereof and electronic device - Google Patents
Liquid crystal element, manufacture thereof and electronic device Download PDFInfo
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- CN1324372C CN1324372C CNB031471994A CN03147199A CN1324372C CN 1324372 C CN1324372 C CN 1324372C CN B031471994 A CNB031471994 A CN B031471994A CN 03147199 A CN03147199 A CN 03147199A CN 1324372 C CN1324372 C CN 1324372C
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1339—Gaskets; Spacers; Sealing of cells
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1339—Gaskets; Spacers; Sealing of cells
- G02F1/13392—Gaskets; Spacers; Sealing of cells spacers dispersed on the cell substrate, e.g. spherical particles, microfibres
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- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Liquid Crystal (AREA)
- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
Abstract
The invention provides a liquid crystal device in which the cell gap can be made uniform in substrate planes and degradation of display characteristics, such as contrast reduction, is reduced or hardly occurs. A liquid crystal device of the present invention has a configuration in which spacers are placed between a lower substrate and an upper substrate that hold a liquid crystal layer therebetween. The liquid crystal layer and the spacers are placed inside a sealing material shaped like a closed frame in the substrate planes, and the density of the spacers inside the sealing material is set at 50 to 150 spacers per square millimeter.
Description
Technical field
The electronic installation that the present invention relates to the manufacture method of liquid crystal device, liquid crystal device and have this liquid crystal device particularly relates to the technology that liner is set between substrate.
Background technology
As existing liquid crystal device, exist downside substrate and upside substrate to attach mutually through encapsulant at the edge part of substrate separately, between this a pair of substrate, enclose the structure of liquid crystal layer.At this moment, even in real estate at interval in order to make substrate, the known technology that configuration liner between a pair of substrate is arranged.
Such liquid crystal device is made with the following method.Promptly, on downside substrate and upside substrate, after stacked formation electrode and the alignment films etc., for example, on the downside substrate, at the edge part of this substrate to have formed the uncured encapsulant of shape printing of liquid crystal injecting port, after scattering liner on the surface of this substrate or another piece substrate, by means of this downside substrate and a upside substrate being pasted, obtain liquid crystal cell through uncured encapsulant.Then, the uncured encapsulant of this liquid crystal cell is solidified, by in liquid crystal cell, injecting liquid crystal, form liquid crystal layer again, shut inlet with encapsulant then from the liquid crystal injecting port that forms at encapsulant in advance.At last, the outside that is manufactured on downside substrate and upside substrate forms optical elements such as retardation plate and polaroid, has the liquid crystal device of said structure.
At this moment, owing to before liquid crystal injects, carry out the applying of substrate, so the pressure when only liner is subjected to baseplate-laminating in order to bear laminate pressure, in any case can not reduce the quantity of liner, particularly, for example, is necessary for 200～300/mm
2About.Here, when liner quantity after a little while, just little to the influence that shows, can carry out the demonstration of high-contrast, can also connect with the reduction of cost simultaneously, still, from guaranteeing the uniform substrate viewpoint of (liquid crystal bed thickness) at interval, in above-mentioned manufacture method, 200/mm
2About be lower limit.
Summary of the invention
The present invention carries out in view of the above problems, its purpose is to provide and can makes substrate even in real estate at interval, be difficult to take place the liquid crystal device of the low inferior display characteristic reduction of contrast, the manufacture method of this liquid crystal device simultaneously, and then the electronic installation with this liquid crystal device is provided.
In order to solve above-mentioned problem, liquid crystal device of the present invention is the liquid crystal device that has disposed liner between a pair of substrate of clamping liquid crystal layer, it is characterized in that: liquid crystal layer and liner are configured in the inside of frame shape encapsulant closed in the interior zone of aforesaid substrate face, described liner anchors at above one of them of above-mentioned a pair of substrate, is 50～150/mm in the liner density of sealing material internal
2
In the liquid crystal device of the invention described above, owing to constitute closed frame shape in the zone of encapsulant in substrate, so when making this liquid crystal device, can not behind baseplate-laminating, inject liquid crystal, thereby have to adopt before baseplate-laminating liquid crystal drop to a certain substrate, again with the operation of another piece baseplate-laminating.In this occasion, because can be to substrate with liquid crystal drop, adhesive substrates under the state that has scattered liner again, so be not only liner, pressure when liquid crystal also is subjected to baseplate-laminating, thereby compare with the existing liquid crystal device that is provided with the structure of inlet, can relatively reduce liner quantity.That is,,, can guarantee that uniform substrate at interval so, also can withstand laminate pressure even reduce the quantity of liner because liquid crystal plays the effect of bearing a part of laminate pressure.
Therefore, in the present invention,, the liner density of the interior zone of encapsulant frame can be reduced to 50～150/mm owing to be made for closed frame shape in the zone of structure in real estate with encapsulant
2, consequently, compared with prior art, liner reduces the influence that shows, is sewed the decrease of contrast that causes etc. by near the light the liner and is difficult to take place.Consequently, according to said structure, can provide and to try to achieve the liquid crystal device that cost reduces and display characteristic improves that causes by the minimizing of employed liner quantity.
In addition, in the distribution density of liner less than 50/mm
2Occasion, often be difficult in real estate, make liquid crystal bed thickness (substrate at interval) to be kept evenly, thereby cause that display quality descends, in addition, when the distribution density of liner surpasses 150/mm
2The time, the cost decline scope often reduces, and light often takes place easily sews, so that the amplitude that contrast improves reduces.
In addition, if as in the past, with the encapsulant that inlet is arranged, carrying out liquid crystal before baseplate-laminating injects, owing to liquid crystal leakage takes place to unfavorable conditions such as outsides when baseplate-laminating, so have the occasion of the encapsulant of inlet in formation, in fact can not before applying, carry out liquid crystal and inject.On the other hand, self-evident, use the encapsulant that does not have inlet of the present invention, can not behind baseplate-laminating, carry out liquid crystal and inject, therefore, according to structure of the present invention, really can before baseplate-laminating, carry out liquid crystal and inject, can realize that the liner in the above-mentioned scope scatters density.
In liquid crystal device of the present invention, in detail, can make encapsulant not be exposed to the edge of substrate and form the frame shape.In addition, in detail, encapsulant is formed do not have the shaped as frame shape of remaining silent towards the opening of the outer rim of substrate.By means of the shaped as frame shape of making the complete closure that liquid crystal injecting port is not set like this on encapsulant (in detail, the shaped as frame shape of remaining silent),
Can adopt before baseplate-laminating liquid crystal drop to substrate, be dispersed in liner on the substrate after, with the method for making of these baseplate-laminatings, thereby can be as mentioned above the distribution density of liner be reduced to 50～150/mm
2
In addition, in liquid crystal device of the present invention, can on part or all of the surface of above-mentioned liner, the orientation device specifies be set, that is, at the near surface liquid crystal aligning of liner confusion often taking place, causes contrast to descend, by means of in pad surfaces the orientation device specifies being set like this, near pad surfaces, also can make liquid crystal aligning, the generation that prevents that light from sewing can be provided, thereby be difficult to produce the liquid crystal device of degradation unfavorable condition under the contrast.
In addition, as the orientation device specifies, for example, for example can example illustrate with method such as additional chain alkyl on pad surfaces such as silane coupling agent.
In addition, can be on part or all of the surface of liner, adhere to the thermohardening type resin that has solidified.By means of on pad surfaces, forming the thermohardening type resin like this, for example after being provided with liner on the assigned position between the substrate, heat-treat, liner is stably adhered to substrate, can prevent for example liner drift, depart from the generation of unfavorable conditions such as assigned position.
In addition, also can carry out painted to liner.For example with the occasion of this liquid crystal device as display device, in the zone of deceiving demonstration (show slinkingly and show), light is usually sewed from set liner, carry out white demonstration (obviously showing) in this part, and as mentioned above, liner is carried out painted, particularly use the liner that is become black, can deceive demonstration (show slinkingly and show) reliably.
Secondly, the manufacture method of liquid crystal device of the present invention is characterised in that and comprises following operation.That is, the manufacture method of liquid crystal device of the present invention is characterised in that, comprising: the operation of the liquid crystal that drips on a certain substrate among a pair of substrate; On a certain substrate among a pair of substrate, the zone in this real estate, the operation of the frame shape encapsulant that formation is closed; On a certain substrate among a pair of substrate, scatter the operation of liner; And the operation that this a pair of substrate is fitted, at the interior zone of encapsulant frame, the distribution density of liner is 50～150/mm
2
In the manufacture method of liquid crystal device of the present invention, owing to be made into before baseplate-laminating with on liquid crystal drop to a substrate, on this substrate or the substrate different, form encapsulant with it, on a certain substrate, scatter the structure of this a pair of substrate being fitted after the liner again, be not only liner so become, the pressure status when liquid crystal also bears baseplate-laminating, even thereby reduce liner density, in real estate, substrate at interval also can be even.Promptly, by means of when carrying out above-mentioned each operation, the distribution density that makes liner can provide both to have kept the at interval homogeneity in face of substrate in above-mentioned scope, and the light that produces because of the liner influence is sewed caused contrast reduction etc. and is difficult to the liquid crystal device that takes place again.
In addition, the manufacture method as the liquid crystal device of the invention described above also can comprise following operation.That is, the different shape of the manufacture method of liquid crystal device of the present invention is characterised in that, comprising: on a certain substrate among a pair of substrate, and the zone in this real estate, the operation of the frame shape encapsulant that formation is closed; To the drip operation of liquid crystal of the interior zone of sealing material; On a certain substrate among a pair of substrate, scatter the operation of liner; And the operation that this a pair of substrate is fitted, at the interior zone of above-mentioned encapsulant frame, the distribution density of liner is 50～150/mm
2
According to such manufacture method, owing to be made into before baseplate-laminating interior zone with liquid crystal drop encapsulant frame to the encapsulant substrate that has formed the frame shape, on a certain substrate, scatter the structure of this a pair of substrate being fitted after the liner again, be not only liner so become, the pressure status when liquid crystal also bears baseplate-laminating.Therefore, even reduce liner density, in real estate, substrate can not become inhomogeneous at interval yet, that is, by means of when carrying out above-mentioned each operation, the distribution density that makes liner is in above-mentioned scope, can provide both to have kept the at interval homogeneity in face of substrate, the light that produces because of the liner influence is sewed caused contrast reduction etc. and is difficult to the liquid crystal device that takes place again.
Secondly, electronic installation of the present invention is characterised in that: for example as display device, have liquid crystal device as described above.Like this, by means of having liquid crystal device of the present invention, can provide display quality good electronic installation.
The present invention also comprises:
A kind of manufacture method of liquid crystal device, above-mentioned liquid crystal device disposes liner between a pair of substrate of holding liquid crystal, it is characterized in that,
Said method comprises:
On a certain substrate among the above-mentioned a pair of substrate, in the zone in this real estate, form the operation of closed frame shape encapsulant;
On the interior zone that surrounds by the sealing material, the drip operation of above-mentioned liquid crystal;
On a certain substrate among the above-mentioned a pair of substrate, on the interior zone that surrounds by above-mentioned encapsulant, scatter the operation of above-mentioned liner;
Above-mentioned liner is attached to operation on a certain substrate; With,
The operation that above-mentioned a pair of substrate is fitted;
On the interior zone that is surrounded by above-mentioned encapsulant, the distribution density of above-mentioned liner is 50～150/mm
2
In the operation of above-mentioned a pair of substrate of fitting, above-mentioned liner and liquid crystal bear the laminate pressure of this substrate.
Description of drawings
Fig. 1 is the equivalent circuit diagram of on-off element, signal wire in the liquid crystal device of the present invention's the 1st example etc.
Fig. 2 is the planimetric map of structure of adjacent a plurality of pixel groups of tft array substrate that the liquid crystal device of Fig. 1 is shown.
Fig. 3 is the sectional view that the liquid crystal device of Fig. 1 is illustrated the structure in its non-display area.
Fig. 4 is the integral planar synoptic diagram of integrally-built general picture that the liquid crystal device of Fig. 1 is shown.
Fig. 5 is the sectional view that the liquid crystal device of Fig. 1 is illustrated the structure in its viewing area.
Fig. 6 is the synoptic diagram that the structure of liner is shown.
Fig. 7 is the synoptic diagram that is illustrated in the structure when on the liner surface-treated layer being set.
Fig. 8 illustrates the synoptic diagram that liner is carried out the structure of painted occasion.
Fig. 9 is the key diagram of the effect the when liner that has used Fig. 7 is shown.
Figure 10 is the key diagram of the effect the when liner that has used Fig. 8 is shown.
Figure 11 is the specification figure that the manufacture method of the liquid crystal device of Fig. 1 is illustrated the one example.
Figure 12 is the specification figure that the manufacture method of the liquid crystal device of Fig. 1 is illustrated an one change example.
Figure 13 is the oblique view that electronic installation of the present invention is illustrated several examples.
Embodiment
With reference to the accompanying drawings example of the present invention is described.
[liquid crystal device]
The liquid crystal device of given below example is with the transmission-type liquid crystal device of TFT (thin film transistor (TFT)) element as the active array type of on-off element.In addition, the liquid crystal device of this example is characterised in that: the structure of the liner that between a pair of substrate of clamping liquid crystal layer, is provided with, and a pair of substrate pasted, in a pair of substrate, shut liquid crystal layer the structure of encapsulant.
Fig. 1 is the equivalent circuit diagram of on-off element that is configured to rectangular a plurality of pixels, signal wire of the transmission-type liquid crystal device of this example etc.Fig. 2 is the major part planimetric map of structure that adjacent a plurality of pixel groups of the tft array substrate that is formed with data line, sweep trace, pixel electrode etc. are shown.Fig. 3 is A-A ' the line sectional view of Fig. 2, and Fig. 4 is the overall plan view of planar structure that the transmission-type liquid crystal device integral body of this example is shown.In addition, in Fig. 3, the upside that shows figure is a light incident side, and the downside of figure is for observing the situation of side (observer's side).In addition, for each layer and each member being plotted the size of the degree of on drawing, can discerning, in each figure, each layer and each member have been adopted different engineer's scales.
In the transmission-type liquid crystal device of this example, as shown in Figure 1, rectangular a plurality of pixels have formed pixel electrode 9 respectively and as being used for the switch on TFT element 30 of on-off element of control of this pixel electrode 9, the data line 6a that supplies with picture signal is electrically connected with the source electrode of this TFT element 30 to being configured to.Picture signal S1, the S2 that writes to data line 6a ..., Sn supplies with successively by the order of line, perhaps many adjacent data line 6a are supplied with by group.
In addition, sweep trace 3a is electrically connected with the grid of TFT element 30, sequential in accordance with regulations with impulse form by the order of line to multi-strip scanning line 3a apply sweep signal G1, G2 ..., Gm.In addition, pixel electrode 9 is electrically connected with the drain electrode of TFT element 30, by means of make as TFT element 30 conductings of on-off element constant during, sequential in accordance with regulations write the picture signal S1, the S2 that supply with by data line 6a ..., Sn.
Through pixel electrode 9 write the specified level of liquid crystal picture signal S1, S2 ..., Sn between pixel electrode 9 and back are with the common electrode of addressing, keep constant during.By means of the orientation of liquid crystal molecule set, to preface with the voltage level change that is applied, light is modulated, can carry out gray shade scale and show.Here, the picture signal that keeps for preventing is sewed, and the liquid crystal capacitance that forms between pixel electrode 9 and common electrode has added holding capacitor 70 in parallel.
According to Fig. 2 the planar structure of the major part of the transmission-type liquid crystal device of this example is described below.As shown in Figure 2, on tft array substrate, a plurality of a plurality of rectangular pixel electrodes 9 (9A shows profile by dotted line part) that are made of indium tin oxide transparent conductive materials such as (being designated hereinafter simply as " ITO ") are configured to rectangular, and the border in length and breadth along pixel electrode 9 is provided with data line 6a, sweep trace 3a and electric capacity line 3b etc. respectively.In this example, the zone that is formed with each pixel electrode 9 and the data line 6a, the sweep trace 3a that are provided with around each pixel electrode 9, electric capacity line 3b etc. is a pixel, has made being configured to the structure that each rectangular pixel can show.
Electric capacity line 3b have along sweep trace 3a roughly this line portion of linearly extension (promptly from the plane along the 1st zone that sweep trace 3a forms) and from the position that intersects with data line 6a along data line 6a to the outstanding teat (promptly extending the 2nd zone of setting along data line 6a) of prime one side (the figure upwards) from the plane.And the zone of representing with the oblique line that tilts to the right in Fig. 2 is provided with a plurality of the 1st photomask 11a.
Below according to Fig. 3, the cross-section structure of the transmission-type liquid crystal device of this example is described.As mentioned above, Fig. 3 is the sectional view along the A-A ' line of Fig. 2, is the sectional view that the structure in the zone that has formed TFT element 30 is shown.In the transmission-type liquid crystal device of this example, liquid crystal layer 50 be clamped in tft array substrate 10 and the counter substrate 20 that disposes opposite to each other with it between.
On tft array substrate 10, on the surface of liquid crystal layer 50 1 sides of substrate body 10A, be provided with pixel electrode 9, with each pixel electrode 9 adjoining position be provided with to each pixel electrode 9 carry out switch control pixel switch with TFT element 30.Pixel switch has LDD (lightly doped drain) structure with TFT element 30, comprise sweep trace 3a, by the electric field from this sweep trace 3a form the semiconductor layer 1a of raceway groove channel region 1a ', be used for gate insulating film 2, the low concentration source region 1b of data line 6a, semiconductor layer 1a and high concentration source region 1d and the high concentration drain region 1e of low concentration drain region 1c, semiconductor layer 1a that sweep trace 3a and semiconductor layer 1a are insulated.
On the substrate body 10A that comprises above-mentioned sweep trace 3a, gate insulating film 2, formed and offered contact hole 5 that leads to high concentration source region 1d and the 2nd interlayer dielectric 4 that leads to the contact hole 8 of high concentration drain region 1e.That is, the contact hole 5 of data line 6a through running through the 2nd interlayer dielectric 4 is electrically connected with high concentration source region 1d.
In addition, forming the 3rd interlayer dielectric 7 of offering the contact hole 8 that leads to high concentration drain region 1e on the data line 6a He on the 2nd interlayer dielectric 4.That is, the contact hole 8 of high concentration drain region 1e through running through the 2nd interlayer dielectric 4 and the 3rd interlayer dielectric 7 is electrically connected with pixel electrode 9.
In this example, by means of gate insulating film 2 being set from extending with sweep trace 3a position in opposite directions, used as dielectric film, extend semiconductor film 1a is set, with its 1st electrode 1f as holding capacitor, in addition, with the part of their electric capacity line 3b in opposite directions the 2nd electrode as holding capacitor, constitute holding capacitor 70.
In addition, in the lip-deep zone that is formed with each pixel switch with TFT element 30 of liquid crystal layer 50 1 sides of the substrate body 10A of tft array substrate 10, be provided be used to prevent to see through tft array substrate 10, by the illustrated lower surface of tft array substrate 10 interface of air (tft array substrate 10 with) reflection and the retroreflection light of rework solution crystal layer 50 sides to incide be the 1st photomask 11a of the channel region 1a ' of semiconductor layer 1a and low concentration source, drain region 1b, 1c at least.
In addition, between the 1st photomask 11a and pixel switch are with elements T FT element 30, formed to be used to make and constituted pixel switch with the semiconductor layer 1a of TFT element 30 and the 1st interlayer dielectric 12 of the 1st photomask 11a electrical isolation.In addition, as shown in Figure 2, except the 1st photomask 11a is set on tft array substrate 10, the 1st photomask 11a also be constituted as through contact hole 13 and prime or after the electric capacity line 3b of level be electrically connected.
In addition, the most surperficial in liquid crystal layer 50 1 sides of tft array substrate 10, promptly on pixel electrode 9 and the 3rd interlayer dielectric 7, the alignment films 40 of the orientation of the liquid crystal molecule in the liquid crystal layer 50 when forming the control no-voltage and applying.Therefore, formed in the zone that is provided with such TFT element 30, the most surperficial in liquid crystal layer 50 1 sides of tft array substrate 10, promptly the clamping face of liquid crystal layer 50 has formed the structure of a plurality of concavo-convex or steps.
On the other hand, for counter substrate 20, surface in liquid crystal layer 50 1 sides of substrate body 20A, with data line 6a, sweep trace 3a, pixel switch zone in opposite directions, formation district with TFT element 30, be the zone beyond the open region of each pixel portions, be provided with and be used to prevent that incident light from invading pixel switch with channel region 1a ', the low concentration source region 1b of the semiconductor layer 1a of TFT element 30, the 2nd photomask 23 of low concentration drain region 1c.In addition, liquid crystal layer 50 1 sides at the substrate body 20A that has formed the 2nd photomask 23, on its almost whole, form the common electrode 21 that constitutes by ITO etc., in these liquid crystal layer 50 1 sides, the alignment films 60 of the orientation of the liquid crystal molecule in the liquid crystal layer 50 when forming the control no-voltage and applying.
In addition, Fig. 4 is the floor map of integrally-built general picture that the transmission-type liquid crystal device 100 of this example is shown, between tft array substrate 10 and counter substrate 20 to be formed liquid crystal layer 50 by the mode of loop-like encapsulant 93 sealings.Promptly, in the transmission-type liquid crystal device 100 of this example, encapsulant 93 does not possess the inlet that is used to inject liquid crystal, it is closed shaped as frame shape in the face inner region of substrate 10,20, do not expose to the outer rim of substrate 10,20, formation does not possess the shaped as frame shape of remaining silent to the opening of the outer rim of substrate 10,20.
Then, Fig. 5 is the zone that is formed with pixel electrode 9 that Fig. 2 is shown, i.e. the non-sectional view that forms the structure of the viewing area zone, that do not form photomask 23 of TFT element 30.In this viewing area, with shown in Figure 3 regional the same, be at downside tft array substrate (but, do not form the TFT element in the viewing area) 10 and the upside counter substrate 20 that disposes in opposite directions with it between clamping the structure of liquid crystal layer 50, also have, this viewing area also is between each substrate 10,20 and keeps the state at the interval of regulation through liner 15.
As mentioned above, formed liner 15 between a pair of substrate 10,20 of clamping liquid crystal layer 50, to the internal area of encapsulant 93, the formation number of this liner is 50～150/mm
2(for example about 100/mm
2).Like this, in this example,, descend so be difficult to take place to sew the display quality that causes by near the light liner 15 owing to reduced the distribution density of liner.
Here, for formed the existing liquid crystal device of liquid crystal injecting port on encapsulant, if inject liquid crystal before baseplate-laminating, then probably can spill from inlet when baseplate-laminating, this is undesirable.So, when on encapsulant, having formed liquid crystal injecting port, have to behind baseplate-laminating, inject liquid crystal.On the other hand, liquid crystal device to the instinct example that on encapsulant 93, do not form liquid crystal injecting port, owing to there is not inlet, so can not behind baseplate-laminating, inject liquid crystal, have to adopt before baseplate-laminating with on a certain substrate of liquid crystal drop to the substrate 10,20 operation of fitting with another piece substrate.
In this occasion, since can with liquid crystal drop to substrate, and scattered adhesive substrates under the state of liner 15, so be not only liner 15, pressure when liquid crystal also bears baseplate-laminating (laminate pressure), thereby compare with the existing liquid crystal device that is provided with the structure of inlet, the quantity of liner 15 can relatively be reduced, that is, can realize lacking to 50～150/mm
2About the liner number.
Like this, in the liquid crystal device of this example, owing to formed the structure that on encapsulant 93, does not form liquid crystal injecting port, so liquid crystal plays the effect of bearing a part of laminate pressure, even reduce the quantity of liner 15, also can withstand laminate pressure, can guarantee that uniform substrate at interval.Therefore, in the liquid crystal device of this example, because the structure of encapsulant 93 is made closed frame shape in the face inner region of substrate 10,20, so the density of the liner 15 of the inside of the frame of encapsulant 93 can be reduced to 50～150/mm
2, consequently, compared with prior art, the influence of 15 pairs of demonstrations of liner reduces, and is sewed by near the light the liner 15 that degradation is difficult to take place under the contrast that causes.
In the liquid crystal device of this example, when the distribution density of liner 15 less than 50/mm
2The time, often be difficult in the face of substrate 10,20, make the bed thickness (substrate at interval) of liquid crystal layer 50 to be kept evenly, thereby cause that display quality descends, in addition, when the distribution density of liner 15 surpasses 150/mm
2The time, the cost decline scope often reduces, and simultaneously light often takes place easily to sew, so that the amplitude that contrast improves reduces, and also has, and from the angle of reliability, the low-temperature bubbles incidence increases in liquid crystal layer 50.In addition, as this example, the distribution density of the liner 15 when being formed in the structure that liquid crystal injecting port is not set on the encapsulant 93 is 80～150/mm preferably
2About.
In addition, in this example, having made with the white and black displays is the structure of prerequisite, still, when needs carry out the colour demonstration, also can form colour filter.That is, the colour filter that can constitute by dyed layer and light shield layer (black matrix) in the inside surface setting of upside substrate (counter substrate) 20, then, the protective seam of formation protection colour filter, and then on protective seam, form pixel electrode 9.Various different colours are set in the viewing area, the dyed layer of for example red (R), green (G), blue (B), therefore, pixel is made of viewing area of all kinds, can carry out colour and show on each pixel.In addition, in this example, illustration the active matrix type liquid crystal device, but in simple matrix formula liquid crystal device for example, also can adopt structure of the present invention.
Structure to the liner 15 that adopts in the liquid crystal device of this example describes below.Liner 5 can constitute with the spherical component that for example is made of silicon dioxide, polystyrene etc.The diameter of liner 15 is configured to and encloses thickness (box is thick, and the promptly substrate at interval) unanimity of the liquid crystal layer 50 in the liquid crystal device, for example can select in the scope of 2～10 μ m.
As liner 15, as shown in Figure 6, can adopt the structure of adhesion heat gel-type resin layer 150 from the teeth outwards.At this moment, by means of the curing of thermohardening type resin, liner 15 can arrive on downside substrate (tft array substrate) 10 and/or the upside substrate (counter substrate) 20 fixing reliably.For example, in the manufacturing process of this liquid crystal device, after going up distribution liner 15, heat-treat, make the thermohardening type resin solidification, liner 15 is fixed on the counter substrate 20 at the substrate (counter substrate 20) different with the substrate (for example tft array substrate 10) of the liquid crystal that drips.
The surface-treated layer 151 of additional chain alkyl as shown in Figure 7 for example can be set on the surface of liner 15 in addition.As the method for the surface-treated layer 151 that additional chain alkyl is set, for example can enumerate and carry out the surface-treated method with silane coupling agent.Shown in Fig. 9 (a), in the occasion of using the liner 15 that surface-treated layer 151 is not set, light often takes place in this part and sews in the orientation confusion at the near surface liquid crystal molecule of liner 15.On the other hand, shown in Fig. 9 (b), be provided with the occasion of the liner 15a of surface-treated layer 151 in use, can make liquid crystal molecule, be difficult to take place light in this part and sew at the near surface of liner 15a in prescribed direction (occasion of this example is a vertical direction) orientation.
In addition, can carry out the example that painted, shown in Figure 8 liner 15b is showing the liner of black to liner.For example, shown in Figure 10 (a),, then when black demonstration (show slinkingly and show), show, often become one of reason of contrast decline in some occasions corresponding to liner generation white point as if using uncoloured liner 15.But, shown in Figure 10 (b), if use painted liner 15b as shown in Figure 8 then when black demonstration (show slinkingly and show), the white point corresponding with liner does not take place show.In addition,,, the white point demonstration compares with taking place when deceiving demonstration (show slinkingly and show) though the generation stain corresponding with liner shows when showing (bright demonstration) in vain, and little for the influence that contrast descends.
[manufacture method of liquid crystal device]
Below with reference to Fig. 3 and Figure 11, to describing in one of the manufacture method of the liquid crystal device shown in above-mentioned example example.At first, shown in the S1 of Figure 11, on the substrate body 10A of the downside that constitutes by glass etc., form photomask 11a, the 1st interlayer dielectric 12, semiconductor layer 1a, channel region 1a ', low concentration source region 1b, low concentration drain region 1c, high concentration source region 1d, high concentration drain region 1e, storage capacitor electrode 1f, sweep trace 3a, electric capacity line 3b, the 2nd interlayer dielectric 4, data line 6a, the 3rd interlayer dielectric 7, contact hole 8, pixel electrode 9, alignment films 40, thereby make downside substrate (tft array substrate) 10.In addition, on the substrate body 20A of upside, also form photomask 23, opposite electrode 21, alignment films 60, thereby make upside substrate (counter substrate) 20.
Secondly, in the S2 of Figure 11, the liquid crystal of the ormal weight that on downside substrate (tft array substrate) 10, drips.Then, in the S3 of Figure 11, printing and sealing material 93 on upside substrate 20, and then in S4, on this upside substrate 20, scatter liner 15.At this moment, as shown in Figure 4, encapsulant 93 forms the shaped as frame shape of remaining silent that does not have liquid crystal injecting port, and making the distribution density of liner 15 in the medial region of the encapsulant 93 of the shaped as frame shape of remaining silent again is 50～150/mm
2About.
Then, in the S5 of Figure 11, downside substrate 10 and upside substrate 20 are fitted, form optical elements such as not shown retardation plate and polaroid in the outside of downside substrate 10 and upside substrate 20 again, make the liquid crystal device that has panel construction shown in Figure 3 at least.
On the other hand, as the different examples of manufacture method, can obtain the liquid crystal device of above-mentioned example by means of operation as shown in figure 12.At first, the same with the S1 of above-mentioned Figure 11 shown in the S11 of Figure 12, on the substrate body 10A of the downside that constitutes by glass etc., form alignment films 40 etc., make downside substrate (tft array substrate) 10.In addition, on the substrate body 20A of upside, also form alignment films 60 etc., make upside substrate (counter substrate) 20.
Secondly, in the S12 of Figure 12, the encapsulant 93 of the printing shaped as frame shape of remaining silent same as described above, that do not have liquid crystal injecting port on downside substrate (tft array substrate) 10, and then in the S13 of Figure 12, the liquid crystal of the ormal weight that drips in the inboard of the encapsulant 93 of this shaped as frame shape of remaining silent.Then, in the S14 of Figure 11, on upside substrate 20, scatter liner 15.At this moment, in the medial region of the encapsulant 93 of the shaped as frame shape of remaining silent, the distribution density of liner 15 is 50～150/mm
2About.
Then, in the S15 of Figure 12, downside substrate 10 and upside substrate 20 are fitted, form optical elements such as not shown retardation plate and polaroid in the outside of downside substrate 10 and upside substrate 20 again, make the liquid crystal device that has panel construction shown in Figure 3 at least.
[electronic installation]
Below the object lesson that has at the electronic installation of the liquid crystal device shown in the above-mentioned example is described.
Figure 13 (a) is the oblique view that one of mobile phone example is shown.In Figure 13 (a), symbol 500 expression mobile telephone main units, symbol 501 expressions have the liquid crystal display part of the liquid crystal device of above-mentioned example.
Figure 13 (b) is the oblique view that one of portable information processing devices such as word processor, personal computer example is shown.In Figure 13 (b), symbol 600 expression signal conditioning packages, input parts such as symbol 601 expression keyboards, symbol 603 expression signal conditioning package main frames, symbol 602 expressions have the liquid crystal display part of the liquid crystal device of above-mentioned example.
Figure 13 (c) is the oblique view that one of Wristwatch-type electronic installation example is shown.In Figure 13 (c), symbol 700 expression wrist-watch main frames, symbol 701 expressions have the liquid crystal display part of the liquid crystal device of above-mentioned example.
Like this, at each electronic installation shown in Figure 13 (a)～(c) owing to be a certain electronic installation, so be the good electronic installation of display quality with liquid crystal device of above-mentioned example.
[embodiment]
Secondly, for the characteristic of the liquid crystal device of confirming this example, enumerated following embodiment.That is, as shown in table 1, made the liquid crystal device of embodiment 1～4 and the liquid crystal device of comparative example 1～4, its contrast and even substrate homogeneity are at interval investigated.
At first, the liquid crystal device of embodiment 1～4 has the structure of above-mentioned example with the manufacture method manufacturing that comprises operation shown in Figure 11.That is, encapsulant 93 is the shaped as frame shape of remaining silent that does not have liquid crystal injecting port, and is as shown in table 1, and the distribution density of liner 15 is set at 50/mm successively from embodiment 1
2, 80/mm
2, 110/mm
2, 150/mm
2
On the other hand, the liquid crystal device of comparative example 1,2 forms the encapsulant 93 do not have liquid crystal injecting port, and the distribution density of liner 15 is set at 10/mm
2With 200/mm
2In addition, the liquid crystal device of comparative example 3,4 is the encapsulants that have liquid crystal injecting port by means of employing, liquid crystal is injected and the liquid crystal device made from this liquid crystal injecting port in downside substrate 10 and upside substrate 20 back of fitting, the distribution density of liner 15 is set at 50/mm respectively
2With 150/mm
2
[table 1]
| The encapsulant inlet | It is (individual/mm that liner scatters density 2) | Substrate inner evenness at interval | The contrast ratio | Low temperature bubble | |
| Embodiment | |||||
| 1 | Do not have | 50 | ○ | ○ | ○ |
| Embodiment 2 | Do not have | 80 | ○ | ○ | ○ |
| Embodiment 3 | Do not have | 110 | ○ | ○ | ○ |
| | Do not have | 150 | ○ | ○ | ○ |
| Comparative example 1 | Do not have | 10 | × | × | ○ |
| Comparative example 2 | Do not have | 200 | ○ | ○ | × |
| Comparative example 3 | Have | 50 | × | × | ○ |
| Comparative example 4 | Have | 150 | △ | ○ | ○ |
Symbol description
Substrate inner evenness zero at interval: very high zero: high △: low *: very low
Contrast is than zero: very high zero: high *: low
Low-temperature bubbles incidence zero: produce low-temperature bubbles hardly
*: there is the possibility that produces low-temperature bubbles
As shown in table 1, the liquid crystal device of embodiment 1～4 is to make substrate uniform Liquid crystal component in real estate at interval with high-contrast, and in the liquid crystal device of comparative example 1, because the distribution density of liner 15 is 10/mm
2So, to compare with the liquid crystal device of embodiment 1～4, substrate is inhomogeneous at interval.In addition, in the liquid crystal device of comparative example 2, because the distribution density of liner 15 is 200/mm
2So, there be the contrast possibility lower than the liquid crystal device of embodiment 1～4, also have, when scattering density at 200/mm
2When above, the hardening of liquid crystal panel own, the expansion of the liquid crystal that causes because of being heated or contraction exist in the liquid crystal 50 inner possibilities that produce bubble.In addition, in the liquid crystal device of comparative example 3,4, owing to formed liquid crystal injecting port on encapsulant, inject liquid crystal behind baseplate-laminating, so compare with the liquid crystal device of embodiment 1～4, substrate becomes inhomogeneous at interval in face.
Also have, about comparative example 3,4, owing to adopted before adhesive substrates liquid crystal drop to a certain substrate, thereafter the method for adhesive substrates, so liquid crystal spills from inlet when fitting, consequently, can not find that liquid crystal bears the effect of baseplate-laminating pressure, thereby be decided to be 50～150/mm in the distribution density that makes liner
2Each comparative example 3,4 in, substrate is at interval inhomogeneous.
[effect of invention]
As mentioned above, according to liquid crystal device of the present invention, because it is the liquid crystal device that the configuration liner forms between a pair of substrate of clamping liquid crystal layer, and liquid crystal layer and liner are configured in the inside of frame shape encapsulant closed in the real estate inner region, the liner density of sealing material internal is decided to be 50～150/mm2So when making this liquid crystal device, can adopt before baseplate-laminating liquid crystal drop to a certain substrate, again with the operation of another piece baseplate-laminating, in this occasion, since can with liquid crystal drop to substrate, and scattered adhesive substrates under the state of liner, so be not only liner, the pressure when liquid crystal also bears baseplate-laminating, thereby compare with the existing liquid crystal device that is provided with the structure of inlet, can reduce liner quantity.
Particularly, as mentioned above, can make liner quantity is 50～150/mm2About, consequently, compared with prior art, liner reduces the impact that shows, is sewed by near the light the liner that degradation is difficult to occur under the contrast that causes. Therefore, according to the present invention, can realize that the display quality that the minimizing because of employed liner quantity causes improves and cost.
Claims (1)
1. the manufacture method of a liquid crystal device, above-mentioned liquid crystal device disposes liner between a pair of substrate of holding liquid crystal, it is characterized in that,
Said method comprises:
On a certain substrate among the above-mentioned a pair of substrate, in the zone in this real estate, form the operation of closed frame shape encapsulant;
On the interior zone that surrounds by the sealing material, the drip operation of above-mentioned liquid crystal;
On a certain substrate among the above-mentioned a pair of substrate, on the interior zone that surrounds by above-mentioned encapsulant, scatter the operation of above-mentioned liner; And
Above-mentioned liner is attached to operation on a certain substrate; With
The operation that above-mentioned a pair of substrate is fitted;
On the interior zone that is surrounded by above-mentioned encapsulant, the distribution density of above-mentioned liner is 50～150/mm
2
In the operation of above-mentioned a pair of substrate of fitting, above-mentioned liner and liquid crystal bear the laminate pressure of this substrate.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP201247/02 | 2002-07-10 | ||
| JP201247/2002 | 2002-07-10 | ||
| JP2002201247A JP2004045614A (en) | 2002-07-10 | 2002-07-10 | Liquid crystal device, method for manufacturing liquid crystal device and electronic appliance |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1472578A CN1472578A (en) | 2004-02-04 |
| CN1324372C true CN1324372C (en) | 2007-07-04 |
Family
ID=30437272
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB031471994A Expired - Fee Related CN1324372C (en) | 2002-07-10 | 2003-07-09 | Liquid crystal element, manufacture thereof and electronic device |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US20040032560A1 (en) |
| JP (1) | JP2004045614A (en) |
| KR (1) | KR100605772B1 (en) |
| CN (1) | CN1324372C (en) |
| TW (1) | TWI232981B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100641003B1 (en) * | 2004-06-16 | 2006-11-02 | 엘지.필립스 엘시디 주식회사 | method for manufacturing of liquid crystal display device |
| KR100710177B1 (en) * | 2005-04-06 | 2007-04-20 | 엘지.필립스 엘시디 주식회사 | Liquid Crystal Display Device And Method for Manufacturing the Same |
| JP2006350211A (en) * | 2005-06-20 | 2006-12-28 | Toshiba Matsushita Display Technology Co Ltd | Liquid crystal display device |
| CN116113794A (en) * | 2020-09-21 | 2023-05-12 | 香港科技大学 | High contrast ferroelectric liquid crystal cell |
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| JPH08262455A (en) * | 1995-03-23 | 1996-10-11 | Citizen Watch Co Ltd | Liquid crystal display panel and its production |
| JPH09160051A (en) * | 1995-12-12 | 1997-06-20 | Hitachi Ltd | Active matrix type liquid crystal display element having transverse electric field structure and its production as well as liquid crystal display device formed by using the same |
| JPH11183917A (en) * | 1997-12-25 | 1999-07-09 | Mitsubishi Electric Corp | Liquid crystal display device and its manufacture |
| CN1269025A (en) * | 1997-06-13 | 2000-10-04 | 积水化学工业株式会社 | Liquid crystal display and method of mfg. same |
| JP2002122872A (en) * | 2000-10-12 | 2002-04-26 | Hitachi Ltd | Liquid crystal display device and method of manufacturing the same |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5963288A (en) * | 1987-08-20 | 1999-10-05 | Semiconductor Energy Laboratory Co., Ltd. | Liquid crystal device having sealant and spacers made from the same material |
| US6437846B1 (en) * | 1993-03-15 | 2002-08-20 | Seiko Epson Corporation | Liquid crystal display device and electronic device including same |
| TW401423B (en) * | 1996-02-14 | 2000-08-11 | Sekisui Fine Chemical Co Ltd | Spacer for liquid crystal display device and liquid crystal display device |
| TW438986B (en) * | 1998-01-30 | 2001-06-07 | Hitachi Ltd | Liquid crystal display device |
| JP2001042340A (en) * | 1999-08-03 | 2001-02-16 | Minolta Co Ltd | Production of liquid crystal display device |
| JP3678974B2 (en) * | 2000-03-29 | 2005-08-03 | 富士通ディスプレイテクノロジーズ株式会社 | Manufacturing method of liquid crystal display device |
| KR100511352B1 (en) * | 2002-02-27 | 2005-08-31 | 엘지.필립스 엘시디 주식회사 | An apparatus for dispensing liquid crystal and a method of controlling liquid crystal dropping amount |
-
2002
- 2002-07-10 JP JP2002201247A patent/JP2004045614A/en active Pending
-
2003
- 2003-06-17 US US10/462,842 patent/US20040032560A1/en not_active Abandoned
- 2003-07-02 TW TW092118107A patent/TWI232981B/en not_active IP Right Cessation
- 2003-07-09 KR KR1020030046262A patent/KR100605772B1/en active IP Right Grant
- 2003-07-09 CN CNB031471994A patent/CN1324372C/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08262455A (en) * | 1995-03-23 | 1996-10-11 | Citizen Watch Co Ltd | Liquid crystal display panel and its production |
| JPH09160051A (en) * | 1995-12-12 | 1997-06-20 | Hitachi Ltd | Active matrix type liquid crystal display element having transverse electric field structure and its production as well as liquid crystal display device formed by using the same |
| CN1269025A (en) * | 1997-06-13 | 2000-10-04 | 积水化学工业株式会社 | Liquid crystal display and method of mfg. same |
| JPH11183917A (en) * | 1997-12-25 | 1999-07-09 | Mitsubishi Electric Corp | Liquid crystal display device and its manufacture |
| US6337729B1 (en) * | 1997-12-25 | 2002-01-08 | Mitsubishi Denki Kabushiki Kaisha | Liquid crystal display device with electrically discharged spacers |
| JP2002122872A (en) * | 2000-10-12 | 2002-04-26 | Hitachi Ltd | Liquid crystal display device and method of manufacturing the same |
Also Published As
| Publication number | Publication date |
|---|---|
| KR20040005670A (en) | 2004-01-16 |
| US20040032560A1 (en) | 2004-02-19 |
| TW200405087A (en) | 2004-04-01 |
| CN1472578A (en) | 2004-02-04 |
| TWI232981B (en) | 2005-05-21 |
| JP2004045614A (en) | 2004-02-12 |
| KR100605772B1 (en) | 2006-07-28 |
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